INDEX TO AMERICAN BOTANICAL LITERATURE 475 
Merrill, E. D. Species Blancoanae. A critical revision of the Philip- 
pine species of plants described by Blanco and by Llanos. Manila 
Dept. Agr. Bur. Sci. Publ. 12: 1-423. pl. 1. 15 Je 1918. 
Merriman, C. H. Two new manzanitas from the Sierra Nevada of 
California. Proc. Biol. Soc. Washington 31: 101-104. pl. 2-5. 
10 Jl 1918. 
Arctostaphylos newukka and A. nissenana, spp. nov. 
Nash, G. V. Injury to evergreens. Jour. N. Y. Bot. Gard. 19: 159- 
164. Jl 1918. 
Nichols, G. E. The vegetation of northern Cape Breton Island, Nova 
Scotia. Trans. Connecticut Acad. Arts and Sci. 22: 249-467. 
f. 770. Je 1918. 
Noriega, J. M. EI Cuapinole. Bol. Dir. Est. Biol. 2: 357-363. 
7 2a 26r8, 
Ochoterena, I. Una nueva especie de Mamillaria. Bol. Dir. Est. 
Biol. 2: 355, 356. f. 1-3. 1918. 
Pennell, F. W. A botanical expedition to Colombia. Jour. N. Y- 
Bot. Gard. 19: 117-138. pl. 213, 214. Je 1918. 
Piper, C. V. The agricultural species of bent grasses. Part I. Rhode 
Island bent and related grasses. U. S. Dept. Agr. Bull. 692: I-14. 
fede mee gat 168. : 
Rhoads, A. S., Hedgcock, G. G., Bethel, E., & Hartley, C. Host re- 
lationships of the North American rusts, other than gymno- 
sporangiums, which attack conifers. Phytopathology 8: 309-352. 
17 Jl 1918. 
Riddle, L. W. Lichens. In Britton, N. L. Flora of Bermuda, 
470-479. 28 F 1918. 
Rigg, G. B. Some energy relations of plants. Science II. 48: 125-132- 
9 Au 1918. 
Rugg, H.G. A Vermont fern garden 8: 50-52. 6 Au 1918. 
Sargent, C. S. Charles Edward Faxon. Rhodora 20: 117-122. 22 
Jl 1918. 
Sax, K. The behavior of the chromosomes in fertilization. Genetics 
3: 309-327. pl. r, 2. Jl 1918. 
Seaver, F. J. Fungi. In Britton, N. L., Flora of Bermuda, 489-540. 
28 F 1918. 
Seeley, D. A. The relation between temperature and crops. Ann. 
Rep. Michigan Acad. Sci. 19: 167-196. Pl. 5. +f.7,8. 1917. 
